Question : The device used to convert solar energy into electricity is:

Option 1: Photovoltaic cell

Option 2: Daniel cell

Option 3: Electrochemical cell

Option 4: Galvanic cell

Question : Which one among the following components is used as an. amplifying device?

Option 1: Transformer

Option 2: Diode

Option 3: Capacitor

Option 4: Transistor

Question : Fleming's right hand rule is used to find the direction of the 

Option 1: Alternate current 

Option 2: Direct current 

Option 3: Induced current

Option 4: Actual current

Question : The apparatus used to test acidity of aqueous solution is

Option 1: pH meter

Option 2: Ammeter

Option 3: Hygrometer

Option 4: Acidmeter

Question : Which instrument is used for photographing the Sun?

Option 1: Galvanometer

Option 2: Potentiometer

Option 3: Spectrophotometer

Option 4: Spectroheliograph